Adrianne Curry

My Fair Brady stars Adrianne Curry and Christopher Knight have separated on what is the fifth anniversary of their wedding.

"After starting a relationship with what seemed to be irreconcilable differences, the couple has reached a period where those differences are no longer appreciated," their manager, Phil Viardo, said in a statement to the Web site Hollyscoop.com. "The decision was mutually reached after it became clear to both that some perspective was needed in order to assess their unique union."

This was Curry's first marriage and Knight's third. They had no children.

The biological clock is ticking for reality star Adrianne Curry – but it's not hers, it's husband Christopher Knight's! "If we start having [kids] soon [he's] not going to get decrepit like Mick Jagger," the ever-outspoken Curry told reporters Tuesday night. "When his kid hits his teens [he'll] be dead. I don't want that and we won't have that if we have kids in the next few years."

Nick Lachey – whose split from Jessica Simpson was announced Wednesday – has been spending some quality time with the boys. Most recently, he waved the starting flag at the Ford 400 NASCAR Nextel Cup, and the racecars weren't the only ones making the rounds that weekend in Florida.